I found $100 left in ATM

[SuperWhale]

I appreciate your kind skepticism.

Good atms at banks (not the dinky ones standing alone in the food court) do in fact do this. I worked as a teller one summer in college. Perhaps this is just older models however.

Little known fact: the red or yellow marker you see on the edge of some $20s are from tellers stocking the atm loading cartridges some of which hold 10 or 20k per cartridge. They count off by some increment (200 $20s lets say) and mark the edge with the marker.